Commentary: Why kids with summer birthdays face surprising health risks

Both of us have kids with summer birthdays. That typically means parties organized around a few key themes: water activities, outdoor grilling and lots of ice cream. But children with summer birthdays share two other things in common: They are more likely to get the flu, and they are more likely to be diagnosed with attention deficit hyperactivity disorder.

For a characteristic we don’t get to choose, our birthdays affect many important parts of our lives. Our research has shown that there are some surprising and important considerations